LISTEN-BEFORE-TALK WITH ADAPTIVE POST-BACKOFF WAIT TIME

• US 20180220457A1
• Filed: 08/15/2016
• Published: 08/02/2018
• Est. Priority Date: 08/14/2015
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Koorapaty, Havish, Mukherjee, Amitav, Cheng, Jung-Fu, Karaki, Reem, Falahati, Sorour, Kang, Du Ho, Larsson, Daniel
• Application Number:
  US15/747,872
• Publication Number:
  US 20180220457A1
• Time in Patent Office: Days
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/085 collision avoidance

Abstract

The disclosure pertains to a radio node for a wireless communication network. The radio node is adapted for transmitting, based on a Listen-Before-Talk, LBT, procedure, on at least one carrier when and/or after reaching a wait time, wherein the wait time is determined based on one or more operational conditions and/or parameters. The disclosure also pertains to related methods and devices.

Claims

1. A radio node for a wireless communication network, the radio node being adapted for transmitting, based on a Listen-Before-Talk, LBT, procedure, on at least one carrier when and/or after reaching a wait time, wherein the wait time is determined based on one or more operational conditions and/or parameters.

2. The radio node according to claim 1, the radio node being adapted for multi-carrier operation and/or carrier aggregation, CA, pertaining to the at least one carrier.

3. The radio node according to claim 1, the radio node being adapted for Licensed Assisted Access, LAA, with the at least one carrier being a carrier of a Secondary Cell, SCell.

4. The radio node according to claim 1, wherein performing a LBT procedure comprises determining the wait time and/or withholding transmitting until the wait time is reached.

5. The radio node according to claim 1, wherein the LBT procedure comprises performing a random backoff and/or is based on a random backoff number, wherein the wait time is determined to be later/after the time associated with performing the random backoff.

6. The radio node according to claim 1, wherein an operational parameter indicates a combination of a number of unlicensed carriers used, and/or traffic load, and/or Quality of Service class, and/or interference conditions.

7. A method for operating a radio node in a wireless communication network, the method comprising transmitting, based on a Listen-Before-Talk, LBT, procedure, on at least one carrier when and/or after reaching a wait time, wherein the wait time is determined based on one or more operational conditions and/or parameters.

8. The method according to claim 7, comprising multi-carrier operation and/or carrier aggregation, CA, pertaining to the at least one carrier.

9. The method according to claim 7, wherein transmitting comprises performing Licensed Assisted Access, LAA, with the at least one carrier being a carrier of a Secondary Cell, SCell.

10. The method according to claim 7, wherein the LBT procedure comprises determining the wait time and/or withholding transmitting until the wait time is reached.

11. The method according to claim 7, wherein the LBT procedure comprises performing a random backoff and/or is based on a random backoff number, wherein the wait time is determined to be later/after the time associated with performing the random backoff.

12. The method according to claim 7, wherein an operational parameter indicates a combination of a number of unlicensed carriers used, and/or traffic load, and/or Quality of Service class, and/or interference conditions.

13. (canceled)

14. (canceled)

15. A radio node for a wireless communication network, comprising:

radio circuitry; and

control circuitry associated with the radio circuitry, the control circuitry operable to cause the radio node to transmit via the radio circuitry, based on a Listen-Before-Talk, LBT, procedure, on at least one carrier when and/or after reaching a wait time, wherein the wait time is determined based on one or more operational conditions and/or parameters.

16. A non-transitory computer readable medium comprising instructions executable by a radio node for a wireless communication network, whereby the radio node is operable to transmit, based on a Listen-Before-Talk, LBT, procedure, on at least one carrier when and/or after reaching a wait time, wherein the wait time is determined based on one or more operational conditions and/or parameters.